Anumber is equal to the sum of half a second number and 3. the first number is also equal to the sum of one-quarter of the second number and 5. the situation can be represented by using the graph below, where x represents the second number. which equations represent the situation? y=1/2x+3 and y=1/4x+5 y=3x+1/2 and y=5x+1/4 y=2x+3 and y=4x+5 y=3x+2 and y=5x+4